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Grip extension linkage to provide gripping tool with improved operational range, and method of use of the same

  • US 8,454,066 B2
  • Filed: 07/17/2009
  • Issued: 06/04/2013
  • Est. Priority Date: 07/18/2008
  • Status: Active Grant
First Claim
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1. A grip extension linkage combination, comprising:

  • a gripping tool having axial load or stroke activated radial gripping elements;

    a grip extension linkage, the grip extension linkage comprising;

    at least one annular body having a central internal bore and a peripheral external surface;

    rigid elongated spokes in contact with the radial gripping elements of the gripping tool on a first side and carrying an extended grip surface on a second side opposing the first side; and

    spoke guides on the at least one annular body, the spoke guides being in close fitting relation with the spokes to constrain the spokes from axial rotation or rolling while allowing them to move radially from a retracted position to an engaged position in response to movement of the radial gripping elements of the gripping tool.

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